A passive integrative mercury sampler (PIMS) based on a sealed polymeric
membrane was effective for the collection and preconcentration of Hg0. Because
the Hg is both oxidized and stabilized in the ...

The U.S. Geological Survey has been monitoring the Upper Mississippi River
(UMR) since 1987 to document the fate and transport of contaminants associated
with sediments. The UMR is that part of the ...

The objectives of this work were 1) to study the recovery and homogenity of
polychlorinated biphenyls (PCBs) in solution prepared for ELISA by direct
dilution of isooctane solutions; 2) to evaluate ...

Aquatic plant toxicity tests are frequently conducted in environmental risk
assessments to determine the potential impacts of contaminants on primary
producers. An examination of published plant toxicity ...

This data relates to the relative sensitivity of five species of aquatic
macrophytes and six species of algae to four commonly used herbicides
(atrazine, metribuzin, alachlor, and metoachlor). Toxicity ...

Elevated concentrations of planar, halogenated hydrocarbons have been linked
to reproductive problems in a variety of fish-eating birds and mammals in the
Great Lakes and in particular Saginaw Bay. ...

In this study, mink (Mustela vison) were exposed to various amounts of carp
(Cyprinus carpio) collected from Saginaw Bay, Lake Huron, MI, and the
reproductive effects were observed. In this portion ...

Variation in concentrations of acid-volatile sulfide (AVS) in sediments from
the upper Clark Fork River of Montana was associated with differences in
bioaccumulation of Cu and Zn and growth of larvae ...

Planar halogenated hydrocarbons (PHHs), such as polychlorinated
dibenzo-p-dioxins, dibenzofurans, and biphenyls are present in aquatic systems,
and are known to produce adverse effects in fish. This ...

Contaminant concentrations in freshwater fish and birds were periodically
measured. Fish were selected for monitoring aquatic ecosystems because of
their tendency to accumulate pesticides and other ...

Previous research on the distribution of Neosho madtoms, which are
Federally-listed as threatened, indicated a positive relationship between
density of Neosho madtoms and cumulative density of other ...